Considerations for the Design and Construction of Bonded and Unbonded Post-Tensioned Concrete Bridge Elements

An official website of the United States government. Here's how you know

The .gov means it's official.
Federal government websites always use a .gov or .mil domain. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser's address (or "location") bar.

This site is also protected by an SSL (Secure Sockets Layer) certificate that's been signed by the U.S. government. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely.

May 21st, 2025

Grouted tendons are predominantly used for post-tensioned concrete bridge elements in the United States. However, because of potential durability issues with grouted tendons, some highway agencies have opted to use ungrouted tendons for post-tensioning to facilitate replacement.

NCHRP Research Report 1139: Considerations for the Design and Construction of Bonded and Unbonded Post-Tensioned Concrete Bridge Elements, from TRB’s National Cooperative Highway Research Program, provides information on the different aspects of the design and construction of post-tensioned concrete bridge elements with unbonded tendons or a combination of bonded and unbonded tendons.

Read the full article here.